Microsoft has released the KB5021866 update to the Win11 Beta channel

Microsoft has released the KB5021866 update patch to the Beta channel. The update does not add new features, but fixes performance issues in previous versions, as well as a large number of other bugs.

With this update, the performance degradation of some games and applications due to the GPU performance debugging feature is fixed, and the frame rate and stability of games will no longer be affected.

In addition, the update fixes several issues in the taskbar, explorer.exe no longer crashes when using Alt + F4 with the Show hidden icons pop-up window open in the system tray, and the top half of the media controls in Quick Settings are no longer missing.

Elsewhere, this update contains the following updates:

Announcing Windows 11 Insider Preview Build 22621.1028 and 22623.1028 | Windows Insider Blog